[Ada] Set LDFLAGS to configure setting in gnattools

[Eric Botcazou]

This just aligns gnattools with both c++tools and gotools.

Tested on x86-64/Linux, applied on the mainline.


2026-05-10  Eric Botcazou  <ebotca...@adacore.com>

        PR ada/125232
        * Makefile.in (ADA_FOR_BUILD): Delete.
        (ADA_FOR_TARGET): Likewise.
        (LDFLAGS): Set to @LDFLAGS@.

-- 
Eric Botcazou
diff --git a/gnattools/Makefile.in b/gnattools/Makefile.in
index 98f1f75bdcc..def5c7ce96b 100644
--- a/gnattools/Makefile.in
+++ b/gnattools/Makefile.in
@@ -40,9 +40,7 @@ GNATBIND=@GNATBIND@
 exeext = @EXEEXT@
 objext=.o
 TRACE=no
-ADA_FOR_BUILD=
-ADA_FOR_TARGET=
-LDFLAGS=
+LDFLAGS= @LDFLAGS@
 PWD_COMMAND = $${PWDCMD-pwd}
 
 # The tedious process of getting CFLAGS right.